Manage TA Argument Lists
Used to manage the TA arguments used inside chartSeries
calls.
setTA(type = c("chartSeries", "barChart", "candleChart"))
listTA(dev)type |
the function to apply defaults TAs to |
dev |
the device to display TA arguments for |
setTA and unsetTA provide a simple
way to reuse the same TA arguments for multiple
charts. By default all charting functions will be
set to use the current chart's defaults.
It is important to note that the current device will be used to extract the list of TA arguments to apply. This is done with a call to listTA internally, and followed by calls to setDefaults of the appropriate functions.
An additional way to set default TA arguments for subsequent
charts is via setDefaults. See the examples.
Called for its side-effect of setting the default TA arguments to quantmod's charting functions.
Using setDefaults directly will require the vector
of default TA calls to be wrapped in a call to
substitute to prevent unintended evaluations; OR
a call to listTA to get the present TA arguments. This last
approach is what setTA wraps.
Jeffrey A. Ryan
## Not run: listTA() setTA() # a longer way to accomplish the same setDefaults(chartSeries,TA=listTA()) setDefaults(barCart,TA=listTA()) setDefaults(candleChart,TA=listTA()) setDefaults(chartSeries,TA=substitute(c(addVo(),addBBands()))) ## End(Not run)
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